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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2014-01-01 19:53:27 +0400 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-04-22 15:24:43 +0400 |
| commit | 8b96de0e0359b731b1e5ec897f217f8bf7e5903f (patch) | |
| tree | eb08362f8c6a72e7fbc11b8a1095e40d69ecd516 /arch | |
| parent | f748f4a7ec549febb76e86082d9445beff1e9b01 (diff) | |
| download | linux-8b96de0e0359b731b1e5ec897f217f8bf7e5903f.tar.xz | |
KVM: s390: convert handle_store_cpu_address()
Convert handle_store_cpu_address() to new guest access functions.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kvm/priv.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 306caa27b962..36c34cf22889 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -134,23 +134,26 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu) static int handle_store_cpu_address(struct kvm_vcpu *vcpu) { - u64 useraddr; + u16 vcpu_id = vcpu->vcpu_id; + u64 ga; + int rc; vcpu->stat.instruction_stap++; if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); - useraddr = kvm_s390_get_base_disp_s(vcpu); + ga = kvm_s390_get_base_disp_s(vcpu); - if (useraddr & 1) + if (ga & 1) return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - if (put_guest(vcpu, vcpu->vcpu_id, (u16 __user *)useraddr)) - return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); + rc = write_guest(vcpu, ga, &vcpu_id, sizeof(vcpu_id)); + if (rc) + return kvm_s390_inject_prog_cond(vcpu, rc); - VCPU_EVENT(vcpu, 5, "storing cpu address to %llx", useraddr); - trace_kvm_s390_handle_stap(vcpu, useraddr); + VCPU_EVENT(vcpu, 5, "storing cpu address to %llx", ga); + trace_kvm_s390_handle_stap(vcpu, ga); return 0; } |